4,5-Dihalopyrrole-2-carbonitrile-containing terrestrial and aquatic hebicidal composition

Abstract

Phytoresponsive and antimicrobial compositions containing, as the active ingredient, a 4,5-dihalopyrrole-2-carbonitrile and methods of combatting microorganisms and plant growth comprising applying an effective antimicrobial or phytotoxic quantity of the active ingredient to a surface to be disinfected or to undesirable plant growth.

I claim: 
     
       1. A terrestrial or aquatic herbicidal composition consisting essentially of a herbicidally effective amount of a 4,5-dihalopyrrole-2-carbonitrile having the formula ##SPC3## where X is chlorine, bromine or iodine as the active ingredient applied at a terrestrial herbicidal concentration of 1.0 to 8.0 pounds per acre and at an aquatic herbicidal concentration of from 1.0 to 40 parts per million and a conventional carrier especially adapting the composition as a whole to application to areas to be cleared of undesirable terrestrial or aquatic plant growth.   
     
     
       2. A terrestrial herbicidal composition according to claim 1 containing an effective herbicidal amount of 4,5-dichloropyrrole-2-carbonitrile as the active ingredient. 
     
     
       3. A terrestrial herbicidal composition according to claim 1 containing an effective herbicidal amount of 4,5-dibromopyrrole-2-carbonitrile as the active ingredient. 
     
     
       4. A terrestrial herbicidal composition according to claim 1 containing an effective herbicidal amount of 4,5-diiodopyrrole-2-carbonitrile as the active ingredient. 
     
     
       5. A method of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition according to claim 1 containing a herbicidally effective amount of a 4,5-dihalopyrrole-2-carbonitrile as the active ingredient. 
     
     
       6. A method according to claim 5 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-dichloropyrrole-2-carbonitrile as the active ingredient. 
     
     
       7. A method according to claim 5 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-dibromopyrrole-2-carbonitrile as the active ingredient. 
     
     
       8. A method according to claim 5 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-diiodopyrrole-2-carbonitrile as the active ingredient. 
     
     
       9. A method according to claim 5 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing a 4,5-dihalopyrrole-2-carbonitrile as the active ingredient at an application rate of from 1.0 to 8.0 pounds per acre. 
     
     
       10. A method according to claim 9 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing 4,5-dichloropyrrole-2-carbonitrile as the active ingredient at an application rate of from 1.0 to 8.0 pounds per acre. 
     
     
       11. A method according to claim 9 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing 4,5-dibromopyrrole-2-carbonitrile as the active ingredient at an application rate of from 1.0 to 8.0 pounds per acre. 
     
     
       12. A method according to claim 9 of combatting undesirable terrestrial plant growth which comprises treating an area to be cleared of such undesirable plant growth with a composition containing 4,5-diiodopyrrole-2-carbonitrile as the active ingredient at an application rate of from 1.0 to 8.0 pounds per acre. 
     
     
       13. A method of combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition according to claim 1 containing a herbicidally effective amount of a 4,5-dihalopyrrole-2-carbonitrile as the active ingredient. 
     
     
       14. A method according to claim 13 of combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-dichloropyrrole-2-carbonitrile as the active ingredient. 
     
     
       15. A method according to claim 13 of combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-dibromopyrrole-2-carbonitrile as the active ingredient. 
     
     
       16. A method according to claim 13 of combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing a herbicidally effective amount of 4,5-diiodopyrrole-2-carbonitrile as the active ingredient. 
     
     
       17. A method according to claim 12 for combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing a 4,5-dihalopyrrole-2-carbonitrile as the active ingredient at a concentration of from 1.0 to 40 parts per million. 
     
     
       18. A method according to claim 17 for combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing 4,5-dichloropyrrole-2-carbonitrile as the active ingredient at a concentration of 1.0 to 40 parts per million. 
     
     
       19. A method according to claim 17 for combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing 4,5-dibromopyrrole-2-carbonitrile as the active ingredient at a solution concentration of 1.0 to 40 parts per million. 
     
     
       20. A method according to claim 17 for combatting undesirable aquatic plant growth which comprises treating a body of water to be cleared of such undesirable plant growth with a composition containing 4,5-diiodopyrrole-2-carbonitrile as the active ingredient at a solution concentration of 1.0 to 40 parts per million.